Tellurium (Te)
Element 52 · Metalloid
Tellurium (Te) is a chemical element with atomic number 52. It is classified as a metalloid in period 5, group 16 of the periodic table (the p-block). Its standard atomic weight is 127.60 u and its ground-state electron configuration is [Kr] 4d¹⁰ 5s² 5p⁴.
Tellurium facts
| Atomic number (Z) | 52 |
|---|---|
| Symbol | Te |
| Standard atomic weight | 127.60 u |
| Category | Metalloid |
| Group | 16 |
| Period | 5 |
| Block | p-block |
| Electron configuration | [Kr] 4d¹⁰ 5s² 5p⁴ |
| Electronegativity (Pauling) | 2.1 |
| State at 20 °C | Solid |
| Protons / electrons | 52 / 52 |
| Neutrons (most common isotope, approx.) | 76 |
| Molar mass | 127.6 g/mol |